TPS5910 Datasheet, PDF (1/11 Pages) Texas Instruments – TPS5908, TPS5908A, TPS5910, TPS5910A OPTOISOLATED FEEDBACK AMPLIFIERS

TPS5908, TPS5908A, TPS5910, TPS5910A
OPTOISOLATED FEEDBACK AMPLIFIERS
D TLV431 Precision Programmable Reference
(1.24 V) and an Optocoupler in a Single
Package
D 1% Voltage-Reference Tolerance
D Controlled Optocoupler CTRs:
TPS5908, TPS5910 100% to 400%
TPS5908A, TPS5910A 150% to 300%
D High Withstand Voltage (WTV), 7500 V Peak
for 1 Minute
D Safety Regulatory Approvals
– UL . . . File Number E65085
– FIMKO, SEMKO, NEMKO, DEMKO
– EN60065/IEC 65
– EN60950/IEC 950
– VDE 0884, Level 4 (6000-V Insulation)
SOES030B – MAY 1997 – REVISED JANUARY 1998
DCS OR P PACKAGE
(TOP VIEW)
LED 1
COMP 2
GND 3
FB 4
8 NC/BASE^†
7C
6E
5 NC
NC – No internal connection
†BASE _{– TPS5910, TPS5910A only}
description
These optoisolated feedback amplifiers consist of the industry standard TLV431 precision programmable
reference with a 1% reference voltage tolerance, and an optocoupler. The devices are primarily intended for
use as the error-amplifier/reference/isolation-amplifier element in isolated ac-to-dc power supplies and dc-to-dc
converters. The optocoupler is a gallium-arsenide (GaAs) light-emitting diode that emits at a wavelength of
940 nm, combined with a silicon phototransistor. The current transfer ratio (CTR) ranges from 100% to 400%
in the standard version. The TPS5908A and TPS5910A versions with 150%-to-300% CTR are available for
higher-performance applications. All versions enable power-supply designers to reduce component count and
save space in tightly packaged designs. The tight-tolerance reference eliminates the need for adjustments in
many applications.
These devices are characterized for operation from – 40°C to 100°C. Each amplifier is supplied in an 8-pin DIP
or in an 8-pin gull-wing surface-mount package (DCS).
typical application
+
VI
PWM
Control
TPS5908
TPS5908A
TPS5910
TPS5910A
7
1
TPS5908, TPS5910: CTR Range, 100% to 400%
TPS5908A, TPS5910A: CTR Range, 150% to 300%
2
6
4
3
8
(TPS5910, TPS5910A Only)
+
VO
R1
R2
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright © 1998, Texas Instruments Incorporated
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